HIGH QUALITY AIR FILTER designed to replace your humidifier filter and help restore clean air. HEALTHIER LIFESTYLE! Premium humidifier filter constructed with high-quality materials to help reduce the presence of limestone, bacteria, germs, and fungi in the air. Promotes safe and clean operation. EASY TO INSTALL – simply remove the old filter and insert the new one for quick maintenance. ANTIMICROBIAL TREATMENT helps inhibit the growth and spread of mold, fungus, and bacteria on the filter surface. Helps remove minerals and impurities from water. Ideal replacement for natural cool moisture humidifiers, aiding in the reduction of waterborne minerals and pollutants. Replace every 2 weeks for optimal performance. Color: White Material: Composite material Package Contents: 4 x Humidifier Filter Note: Light reflection and differences in display screens may cause slight variations between the color of the item in the photo and the actual product. Measurement error allowance is +/- 1-3 cm.